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氟由胃肠道吸收至血液,然后多数或沉积于骨骼或经肾脏排泻;这两种机理控制着血浆氟水平不至于明显升高。如果情况正常,摄入的氟中约90%在胃肠内吸收;与氟离子结合的饮食中的金属离子如钙、镁和铁等可妨碍其吸收。大量细胞外体液稀释了被吸收的氟,这是机体调节血浆氟浓度升高的第三种方式。血浆氟浓度一般于摄入后30～60分钟达高峰。氟由血浆扩散到机体各部组
Fluoride is absorbed into the bloodstream by the gastrointestinal tract and is mostly or deposited in the bones or excreted by the kidneys; both mechanisms control the level of plasma fluoride not to increase significantly. About 90% of the uptake of fluoride is absorbed in the stomach and intestine, if normal, and metal ions such as calcium, magnesium and iron in fluoride-binding diets can hinder their absorption. A large amount of extracellular fluid dilutes the absorbed fluorine, which is the third way the body regulates plasma fluoride concentrations. Plasma fluoride concentrations generally reach their peak 30 to 60 minutes after ingestion. Fluorine is diffused from the plasma into various body parts of the body